Think of it as the modern form of,

“Give me six lines…”

[1] Contrary to what people think, guard labour [police] has little or no interest in either justice or correctly solving crime. As I’ve noted before their process is,

1, Build a list of suspects.
2, Prune the list down.
3, Look not for evidence but what a prosecutor can use to confound a jury thus get them to believe in nonsense to obtain a conviction.
4, Get any kind of conviction to keep politicians / funds holders happy.

That is once you are on the guard labours short list they immediately fail to carry out one of their primary requirments which is that of “impartiality”. That is they don’t look for, ignore, or hide information that might show you are innocent, so they can get the case closed quickly and most importantly as cheaply as possible.